Barking drum



I Dec. 17, 1929. P. P. WESTBYE 1,739,564

BARK I NG DRUM Filed Feb. 11. 1928 M fEflER Psomso/l wigrays.

ETj I 2 MOI A4 INVENTOR Patented Dec. 17, 1929 UNITED STATES PATENT OFFICE BARKING DRUM I Application filed February 11, 1928. Serial No. 253,676.

This invention relates to means for removing the bark from pulp logs and more particularly to the construction of barking drums employed for that purpose, of the type having open ends through which the logs to be barked are passed, in entering or leaving the drums or multiple sections of drums.

The object of my invention is to provide an improved end head for barking drums, to

1 which the ends of the channels, forming the walls of the drum, can be more rigidly and more readily secured than hitherto.

A further object is to provide means to secure the ends of the channels directly to the end heads, whereby the great number of connecting parts now employed, are entirely eliminated, and the number of rivets reduced to a minimum, thereby greatly decreasing the time and the labour required in assembling the drum.

A further object is to provide a drum with curved ends which replace the angular pock- 'ets and inward projections of the present construction, whereby the passage of the logs through the drums is facilitated and injury to the logs from brooming is prevented.

A further object is to provide an improved connection between two sections of a barking drum, in which a sleeve on one end head overlaps the edge of the adjacent end head.

The invention is shown as applied to a barking drum in which the flanges of the channels project outwardly and a smooth interior surface is provided, but is equally applicable to drums with other forms of bars forming the walls.

Reference is made to the accompanying drawings in which Fig. 1 shows two adjoining sections of a 4 drum with a portion of the junction cut away.

Fig. 2 is one half end view of a drum.

Fig. 3 is an enlarged sectional view of two adjoining end heads showing the overlapping edges.

The end heads 1, and 10, have a substantial ring portion 11, a curved bowl portion 12,'and interlocking edges 13, and 14. The sleeve 13, overlapping the edge 14.

These end heads 1, and 10, are castings, and

the channels 2, are riveted to them through the ring portions 11, by counter sunk rivets.

The inner edges 15, of the ring portions 11, are rounded.

The male end 1, with its sleeve 13, interlocks with the female end 10, and its edge 14.

The ends of the channels 2, are preferably slightly concaved to fit the surface of the rings 11, and provide a tight connection.

With this construction a drum is provided having end heads 1, and 10, to which the channels 2, are directly secured by rivets, and form a. robust connection and rigid support to withstand the heavy duty of the logs. The curved portions 12, being smooth inside assist the movement of the logs and prevent the ends of the logs from becoming broomed during their passage through the drum. They also prevent the accumulation of bark, which is washed out by the water from the sprinkler.

The assemblying of the drum is simplified and the labour and time in preparing the parts and connecting them up, is reduced to a minimum.

By employing these end heads with interlocking edges between two adjoining sections of a drum, great strength is secured by the reinforcement provided and damage to the end heads is prevented, while the sections are held in alinement during their independent so rotation.

What I claim is 1. In a barking drum of the type specified, an end head having a ring portion and a curved bowl portion.

2. In a barking drum of the type specified having channeled walls, an end head with a ring portion secured to the channels and a curved bowl portion extending beyond the ring portion. 1

3. In a barking drum of the type specified having channeled walls, end heads with ring portions riveted to the ends of the channels, and curved bowl portions eXtending lengthwise beyond the ring portions to flanged 95 rings.

4. In a barking drum of the type specified having communicating sections with channeled walls, end heads with ring portions riveted to the ends of the channels, and curved 100 bowl portions extending lengthwise beyond the ring portions, with overlapping edges between the adjacent sections.

5. In a barking drum of the type specified having channeled walls, end heads cast with ring portions to which the ends of the Channcls are riveted, and curved bowl portions extending lengthwise beyond the ring portions with inner flanged edges adapted to Overlap.

6. A barking drum of the type specified having walls of channels, and smooth domed ends.

PEDER PEDERSON WESTBYE. 

